1 files changed, 70 insertions, 0 deletions
diff --git a/www/wiki/includes/user/UserNamePrefixSearch.php b/www/wiki/includes/user/UserNamePrefixSearch.php
new file mode 100644
index 00000000..b7d50582
--- /dev/null
+++ b/www/wiki/includes/user/UserNamePrefixSearch.php
@@ -0,0 +1,70 @@
+<?php
+/**
+ * Prefix search of user names.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ */
+
+/**
+ * Handles searching prefixes of user names
+ *
+ * @since 1.27
+ */
+class UserNamePrefixSearch {
+
+	/**
+	 * Do a prefix search of user names and return a list of matching user names.
+	 *
+	 * @param string|User $audience The string 'public' or a user object to show the search for
+	 * @param string $search
+	 * @param int $limit
+	 * @param int $offset How many results to offset from the beginning
+	 * @return array Array of strings
+	 */
+	public static function search( $audience, $search, $limit, $offset = 0 ) {
+		$user = User::newFromName( $search );
+
+		$dbr = wfGetDB( DB_REPLICA );
+		$prefix = $user ? $user->getName() : '';
+		$tables = [ 'user' ];
+		$cond = [ 'user_name ' . $dbr->buildLike( $prefix, $dbr->anyString() ) ];
+		$joinConds = [];
+
+		// Filter out hidden user names
+		if ( $audience === 'public' || !$audience->isAllowed( 'hideuser' ) ) {
+			$tables[] = 'ipblocks';
+			$cond['ipb_deleted'] = [ 0, null ];
+			$joinConds['ipblocks'] = [ 'LEFT JOIN', 'user_id=ipb_user' ];
+		}
+
+		$res = $dbr->selectFieldValues(
+			$tables,
+			'user_name',
+			$cond,
+			__METHOD__,
+			[
+				'LIMIT' => $limit,
+				'ORDER BY' => 'user_name',
+				'OFFSET' => $offset
+			],
+			$joinConds
+		);
+
+		return $res === false ? [] : $res;
+	}
+}